Internet of Things (IoT) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What describes global variables in programming languages?

Restricted to a function only

Used only in specific modules

Can be accessed anywhere in a program

Global variables are defined at a global scope, which means they can be accessed from anywhere in a program, regardless of which function or module the code is executing in. This characteristic allows different parts of the program to share data easily and facilitates communication among various functions or classes without needing to pass variables as parameters.

The accessibility of global variables provides convenience but also requires careful management, as their modification can lead to unintended side effects in different parts of the program. This is what distinguishes them from local variables, which are confined to the scope of a function or code block. Understanding the use of global variables is essential for effective programming, especially in large applications where maintaining state and data consistency is crucial.

Get further explanation with Examzify DeepDiveBeta

Confined to the main method

Next Question

Report this question

Download Internet of Things (IoT) 2025 – 400 Free Practice Questions to Pass the Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy